Home / 7,142.85-10,717.35-2,763.39

Finding the Fourth Proportional to 7,142.85, 10,717.35 and 2,763.39

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Solution

The fourth proportional to 7,142.85, 10,717.35 and 2,763.39 is: 4,146.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142.85 : 10,717.35 = 2,763.39 : x
  2. Step 2: Convert to fraction form
    7,142.85/10,717.35 = 2,763.39/x
  3. Step 3: Cross multiply
    7,142.85x = 10,717.35 × 2,763.39
  4. Step 4: Simplify right side
    7,142.85x = 29,616,217.82
  5. Step 5: Solve for x
    x = 29,616,217.82/7,142.85
  6. Step 6: Final answer
    x = 4,146.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.